{"id":179890,"date":"2024-11-09T05:39:17","date_gmt":"2024-11-08T21:39:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179890\/"},"modified":"2024-11-09T05:39:18","modified_gmt":"2024-11-08T21:39:18","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%a2%9e%e5%8a%a0%e4%b8%80%e5%80%8b%e6%96%b0%e7%9a%84%e5%ad%97%e6%ae%b5-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a2%9e%e5%8a%a0%e4%b8%80%e5%ad%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179890\/","title":{"rendered":"\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u589e\u52a0\u4e00\u500b\u65b0\u7684\u5b57\u6bb5 (\u6578\u64da\u5eab\u589e\u52a0\u4e00\u5b57\u6bb5)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%a2%9e%e5%8a%a0%e4%b8%80%e5%80%8b%e6%96%b0%e7%9a%84%e5%ad%97%e6%ae%b5-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a2%9e%e5%8a%a0%e4%b8%80%e5%ad%97-vTthEDwuRw\">\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u589e\u52a0\u4e00\u500b\u65b0\u7684\u5b57\u6bb5 (\u6578\u64da\u5eab\u589e\u52a0\u4e00\u5b57\u6bb5)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u96a8\u8457\u696d\u52d9\u9700\u6c42\u7684\u8b8a\u5316\uff0c\u7d93\u5e38\u9700\u8981\u5c0d\u6578\u64da\u5eab\u7d50\u69cb\u9032\u884c\u8abf\u6574\u3002\u5176\u4e2d\uff0c\u589e\u52a0\u4e00\u500b\u65b0\u7684\u5b57\u6bb5\u662f\u6700\u5e38\u898b\u7684\u64cd\u4f5c\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728\u4e0d\u540c\u985e\u578b\u7684\u6578\u64da\u5eab\u4e2d\u589e\u52a0\u4e00\u500b\u65b0\u7684\u5b57\u6bb5\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ad%97%e6%ae%b5%ef%bc%9f-vTthEDwuRw\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u5b57\u6bb5\uff1f<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u5b57\u6bb5\u662f\u8868\u683c\u4e2d\u7684\u4e00\u5217\uff0c\u7528\u65bc\u5b58\u5132\u7279\u5b9a\u985e\u578b\u7684\u6578\u64da\u3002\u6bcf\u500b\u5b57\u6bb5\u90fd\u6709\u4e00\u500b\u540d\u7a31\u548c\u6578\u64da\u985e\u578b\uff0c\u4f8b\u5982\u6574\u6578\u3001\u5b57\u7b26\u4e32\u6216\u65e5\u671f\u3002\u589e\u52a0\u65b0\u7684\u5b57\u6bb5\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u5b58\u5132\u66f4\u591a\u7684\u4fe1\u606f\uff0c\u6eff\u8db3\u696d\u52d9\u9700\u6c42\u3002<\/p>\n<h2 id=\"%e5%9c%a8mysql%e4%b8%ad%e5%a2%9e%e5%8a%a0%e5%ad%97%e6%ae%b5-vTthEDwuRw\">\u5728MySQL\u4e2d\u589e\u52a0\u5b57\u6bb5<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8a9e\u53e5\u4f86\u589e\u52a0\u65b0\u7684\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d ADD COLUMN \u65b0\u5b57\u6bb5\u540d \u6578\u64da\u985e\u578b;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8868\uff0c\u4e26\u5e0c\u671b\u589e\u52a0\u4e00\u500b\u540d\u70ba\u201cage\u201d\u7684\u6574\u6578\u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>ALTER TABLE users ADD COLUMN age INT;<\/code><\/pre>\n<p>\u9019\u6a23\u5c31\u6703\u5728\u201cusers\u201d\u8868\u4e2d\u589e\u52a0\u4e00\u500b\u540d\u70ba\u201cage\u201d\u7684\u6574\u6578\u5b57\u6bb5\u3002<\/p>\n<h2 id=\"%e5%9c%a8postgresql%e4%b8%ad%e5%a2%9e%e5%8a%a0%e5%ad%97%e6%ae%b5-vTthEDwuRw\">\u5728PostgreSQL\u4e2d\u589e\u52a0\u5b57\u6bb5<\/h2>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u589e\u52a0\u5b57\u6bb5\u7684\u8a9e\u6cd5\u8207MySQL\u985e\u4f3c\uff0c\u540c\u6a23\u4f7f\u7528ALTER TABLE\u8a9e\u53e5\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d ADD COLUMN \u65b0\u5b57\u6bb5\u540d \u6578\u64da\u985e\u578b;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5728\u201cemployees\u201d\u8868\u4e2d\u589e\u52a0\u4e00\u500b\u540d\u70ba\u201chire_date\u201d\u7684\u65e5\u671f\u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>ALTER TABLE employees ADD COLUMN hire_date DATE;<\/code><\/pre>\n<h2 id=\"%e5%9c%a8sql-server%e4%b8%ad%e5%a2%9e%e5%8a%a0%e5%ad%97%e6%ae%b5-vTthEDwuRw\">\u5728SQL Server\u4e2d\u589e\u52a0\u5b57\u6bb5<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u589e\u52a0\u5b57\u6bb5\u7684\u8a9e\u6cd5\u4e5f\u76f8\u4f3c\uff0c\u4f7f\u7528ALTER TABLE\u8a9e\u53e5\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d ADD \u65b0\u5b57\u6bb5\u540d \u6578\u64da\u985e\u578b;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5728\u201cproducts\u201d\u8868\u4e2d\u589e\u52a0\u4e00\u500b\u540d\u70ba\u201cprice\u201d\u7684\u6d6e\u9ede\u6578\u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>ALTER TABLE products ADD price FLOAT;<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-vTthEDwuRw\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\u9078\u64c7\uff1a<\/strong>\u5728\u589e\u52a0\u5b57\u6bb5\u6642\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u975e\u5e38\u91cd\u8981\u3002\u4e0d\u540c\u7684\u6578\u64da\u985e\u578b\u6703\u5f71\u97ff\u5b58\u5132\u7a7a\u9593\u548c\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u9ed8\u8a8d\u503c\uff1a<\/strong>\u53ef\u4ee5\u5728\u589e\u52a0\u5b57\u6bb5\u6642\u8a2d\u7f6e\u9ed8\u8a8d\u503c\uff0c\u4ee5\u4fbf\u5728\u672a\u63d0\u4f9b\u6578\u64da\u6642\u81ea\u52d5\u586b\u5145\u3002<\/li>\n<li><strong>\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u8003\u616e\u5230\u6578\u64da\u5b8c\u6574\u6027\uff0c\u53ef\u80fd\u9700\u8981\u8a2d\u7f6e\u7d04\u675f\u689d\u4ef6\uff0c\u4f8b\u5982NOT NULL\u6216UNIQUE\u3002<\/li>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u7d50\u69cb\u8b8a\u66f4\u4e4b\u524d\uff0c\u5efa\u8b70\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u640d\u5931\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-vTthEDwuRw\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u589e\u52a0\u4e00\u500b\u65b0\u7684\u5b57\u6bb5\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u64cd\u4f5c\uff0c\u4f46\u9700\u8981\u8b39\u614e\u8655\u7406\u3002\u7121\u8ad6\u662f\u4f7f\u7528MySQL\u3001PostgreSQL\u9084\u662fSQL Server\uff0c\u6b63\u78ba\u7684\u8a9e\u6cd5\u548c\u6ce8\u610f\u4e8b\u9805\u90fd\u80fd\u5e6b\u52a9\u6211\u5011\u9806\u5229\u5b8c\u6210\u9019\u4e00\u4efb\u52d9\u3002\u96a8\u8457\u696d\u52d9\u7684\u767c\u5c55\uff0c\u9748\u6d3b\u5730\u8abf\u6574\u6578\u64da\u5eab\u7d50\u69cb\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u7ba1\u7406\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u589e\u52a0\u4e00\u500b\u65b0\u7684\u5b57\u6bb5\uff0c\u7c21\u55ae\u6b65\u9a5f\u6559\u4f60\u8f15\u9b06\u64f4\u5c55\u6578\u64da\u7d50\u69cb\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-179890","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179890","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=179890"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179890\/revisions"}],"predecessor-version":[{"id":179891,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179890\/revisions\/179891"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}